Public Hydro Data Sources

You requested the publicly available information underlying our slides, so
you could independently verify Enron's conclusions. If you have any other
questions please call me.
---------------------- Forwarded by Mary Hain/HOU/ECT on 09/07/2000 12:47 PM
---------------------------

TIM HEIZENRADER
09/07/2000 12:30 PM
To: Mary Hain/HOU/ECT@ECT
cc: Tim Belden/HOU/ECT@ECT
Subject: Public Hydro Data Sources

Mary:

The public data sources that we routinely use for historical, realtime and
forecast hydroelectric data are:

http://www.nwd-wc.usace.army.mil This site is operated by the Northwest
Division of the US Army Corp of Engineers, and includes both historical and
near-realtime water and power data for all Corp Columbia basin projects, as
well as major USBR projects and non-federal mid-Columbia plants;

http://www.nwrfc.noaa.gov This site is operated by the Northwest River
Forecast Center. It includes both assessments of current Columbia basin
streamflow conditions and forecasts of future conditions;

http://www.mp.usbr.gov This is a Bureau of Reclamation site that publishes
current data and forecasts for California's Central Valley Project (CVP)
plants;

http://www.uc.usbr.gov This is a Bureau of Reclamation site that publishes
data and forecasts for Colorado River Storage Project (CRSP) plant water
releases and power production;

http://h2o.usgs.gov This is a Geological Survey site that publishes
near-realtime data from automated streamflow gages, and

http://www.cbr.washington.edu/dart/ This is a site operated by the
University of Washington that provides convenient access to historical
Columbia River and tributary water data.

Of these, the sites most relevant to recent markets are probably the Corp'
Northwest Division site, which offers enough near-realtime generation data to
directly account for 75% to 80% of Columbia River energy production, and the
River Forecast Center, which provides snowpack-driven, long range volume
runoff forecasts. The CVP data are a helpful index of California hydro
conditions, but only represent about 10% of the state's installed hydro
capacity.

Please forward this information to appropriate FERC staff.